INVERSE SUM INDEG COINDEX OF GRAPHS

被引：0
作者：
Pattabiraman, K. [1 ,2 ]
机构：
[1] Annamalai Univ, Annamalainagar 608002, Tamil Nadu, India
[2] Govt Arts Coll Autonomous, Dept Math, Kumbakonam 612002, India
来源：
CARPATHIAN MATHEMATICAL PUBLICATIONS | 2019年 / 11卷 / 02期
关键词：
inverse sum indeg index; edge corona graph; Mycielskian graph; double graph;
D O I：
10.15330/cmp.11.2.399-406
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
The inverse sum indeg coindex (ISI) over bar (G) of a simple connected graph G is defined as the sum of the terms d(G)(u)d(G)(v)/d(G)(u)+d(G)(v) over all edges uv not in G, where d(G)(u) denotes the degree of a vertex u of G. In this paper, we present the upper bounds on inverse sum indeg coindex of edge corona product graph and Mycielskian graph. In addition, we obtain the exact value of both inverse sum indeg index and its coindex of a double graph.
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收藏
页码：399 / 406
页数：8
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